Genomic sequence and variability in the RA-associated CRH region (8q13) by Fife, MS, Steer, S, Shah, C, Newton, J, Wordsworth, P, Milicic, A, Polley, A, Rosenthal, A, Thoren, G, Dix, K, Kokoris, M, Fisher, SA, Lewis, C, Lanchbury, J